Simple-One-For-One Supervisors

 

 

分享一下 我今天栽倒在这里了 今天看ejabberd,发现ejabberd_c2s执行顺序与我的脑运行的对应不起来。原来这里理解错了，一切的一切 是从 ejabberd_listener:start_listeners()和配置文件的listen开始的。 

simple_one_for_one 与one_for_one相比,simple_one_for_one监控的进程需要用start_child启动,在ejabberd_app里面就是这么干的。

 

 

A supervisor with restart strategy simple_one_for_one is a simplified one_for_one supervisor, where all child processes are dynamically added instances of the same process. Example of a callback module for a simple_one_for_one supervisor:

-module(simple_sup).
-behaviour(supervisor).

-export([start_link/0]).
-export([init/1]).

start_link() ->
    supervisor:start_link(simple_sup, []).

init(_Args) ->
    {ok, {{simple_one_for_one, 0, 1},
          [{call, {call, start_link, []},
            temporary, brutal_kill, worker, [call]}]}}.
When started, the supervisor will not start any child processes. Instead, all child processes are added dynamically by calling:

supervisor:start_child(Sup, List)